A micropolar cohesive damage model for delamination of composites. (1st November 2015)

• Record Type: Journal Article
• Authors: Rahaman, Md.M.; Deepu, S.P.; Roy, D.; Reddy, J.N.
• Is Part Of: Composite structures. Volume 131(2016)
• Page Start: 425
• Page End: 432
• Publication Date: 2015-11-01
• Subjects: Micro-rotations -- Micropolar cohesive law -- Length scales -- Mesh-free methods; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2015.05.026
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: A micropolar cohesive damage model for delamination of composites is proposed. The main idea is to embed micropolarity, which brings an additional layer of kinematics through the micro-rotation degrees of freedom within a continuum model to account for the micro-structural effects during delamination. The resulting cohesive model, describing the modified traction separation law, includes micro-rotational jumps in addition to displacement jumps across the interface. The incorporation of micro-rotation requires the model to be supplemented with physically relevant material length scale parameters, whose effects during delamination of modes I and II are brought forth using numerical simulations appropriately supported by experimental evidences.